Linearity coil of horizontal deflecting circuit

Abstract

A linearity coil of a horizontal deflecting circuit includes a core; a winding connected in series to a horizontal deflecting coil and wound on the core; and a pair of permanent magnets respectively fixed to both ends of the core in the direction of increasing a magnetic force line induced to the core.

What is claimed is: 
     
       1. A linearity coil of a horizontal deflecting circuit having a horizontal deflecting coil, comprising: a core;   a coil connected in series to the horizontal deflecting coil and wound on said core; and   a pair of permanent magnets respectively fixed to both ends of said core with like poles pointing toward the core so as to increase a magnetic flux induced in said core, said permanent magnets and said core forming a single bar-shaped body.   
     
     
       2. A horizontal deflecting circuit of a display device, comprising: a horizontal deflecting coil; and   a linearity coil including a core, p2 a coil connected in series with said horizontal deflecting coil and wound around said core, and   a pair of permanent magnets respectively fixed to both ends of said core with like poles pointing toward the core so as to increase a magnetic flux induced in said core, said permanent magnets and said core forming a single bar-shaped body.     
     
     
       3. A horizontal deflecting circuit for a semi-wide television, the horizontal deflection circuit comprising: a horizontal deflecting coil;   a linearity coil including a core,   a coil connected in series with said horizontal deflecting coil and wound around said core, and   a pair of permanent magnets respectively fixed to both ends of said core with like poles pointing toward the core so as to increase a magnetic flux induced in said core;     a first capacitor having a first end connected to a first node and a second end connected to a second node;   a second capacitor having a first end connected to said second node and a second end connected to a potential;   a first diode having an anode connected to said second node and a cathode connected to said first node;   a second diode having an anode connected to said potential and a cathode connected to said second node;   a third capacitor having a first end connected to said second node and a second end connected to a first end of said linearity coil opposite a second end of said linearity coil which is connected to a first end of said horizontal deflecting coil;   a modulation coil having a first end connected to said second node, and a second end; and   a fourth capacitor having a first end connected to the second end of said modulation coil and a second end connected to said potential;   wherein a second end of said horizontal deflecting coil is connected to said first node.   
     
     
       4. A horizontal deflecting circuit as claimed in claim 3, further comprising: a voltage unit to generate a voltage which is stored in said third and fourth capacitors as first and second voltages, respectively;   wherein during a first half of a scanning interval of the display device, a first current flows into said first diode, said horizontal deflecting coil, said linearity coil, and said third capacitor, and a second current flows into said second diode, said modulation coil, and said fourth capacitor, and during a second half of the scanning interval, a horizontal scanning current flows from said third capacitor into said horizontal deflecting coil through said linearity coil, and a third current flows from said fourth capacitor into said modulation coil.   
     
     
       5. A horizontal deflecting circuit as claimed in claim 3, further comprising a transistor having a collector connected to said first node and an emitter connected to said potential.   
     
     
       6. A horizontal deflecting circuit as claimed in claim 4, further comprising a transistor having a collector connected to said first node and an emitter connected to said potential.